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# varnish
Module uses the `varnishstat` command to provide varnish cache statistics.
It produces:
1. **Connections Statistics** in connections/s
* accepted
* dropped
2. **Client Requests** in requests/s
* received
3. **All History Hit Rate Ratio** in percent
* hit
* miss
* hitpass
4. **Current Poll Hit Rate Ratio** in percent
* hit
* miss
* hitpass
5. **Expired Objects** in expired/s
* objects
6. **Least Recently Used Nuked Objects** in nuked/s
* objects
7. **Number Of Threads In All Pools** in threads
* threads
8. **Threads Statistics** in threads/s
* created
* failed
* limited
9. **Current Queue Length** in requests
* in queue
10. **Backend Connections Statistics** in connections/s
* successful
* unhealthy
* reused
* closed
* resycled
* failed
10. **Requests To The Backend** in requests/s
* received
11. **ESI Statistics** in problems/s
* errors
* warnings
12. **Memory Usage** in MB
* free
* allocated
13. **Uptime** in seconds
* uptime
### configuration
Only one parameter is supported:
```yaml
instance_name: 'name'
```
The name of the varnishd instance to get logs from. If not specified, the host name is used.
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